//
//  GTMGarbageCollection.h
//
//  Copyright 2007-2008 Google Inc.
//
//  Licensed under the Apache License, Version 2.0 (the "License"); you may not
//  use this file except in compliance with the License.  You may obtain a copy
//  of the License at
// 
//  http://www.apache.org/licenses/LICENSE-2.0
// 
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
//  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
//  License for the specific language governing permissions and limitations under
//  the License.
//

#import <Foundation/Foundation.h>

// This allows us to easily move our code from GC to non GC.
// They are no-ops unless we are require Leopard or above.
// See 
// http://developer.apple.com/documentation/Cocoa/Conceptual/GarbageCollection/index.html
// for details.
// General use would be
// CFTypeRef type = ...
// return [GTMNSMakeCollectable(type) autorelease];

#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050

FOUNDATION_STATIC_INLINE id GTMNSMakeCollectable(CFTypeRef cf) { 
  return NSMakeCollectable(cf); 
}

#else

FOUNDATION_STATIC_INLINE id GTMNSMakeCollectable(CFTypeRef cf) { 
  // NSMakeCollectable handles NULLs just fine and returns nil as expected.
  return (id)cf;
}

#endif
